Plastic clasps give the impression that they will sell in the next little while, one of them is much softer than the other. Regarding the size of the box, I find it really too small for the use that I've (sort Hama beads ironing), I should have checked the dimensions instead of watching only the number of compartments. Modularity is good but the walls are very thin plastic does not really breathable quality either. If this box was less than 4 why not, but more than 8: NO!